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SPECIFICATION
radiated emissions shall be measured in the applicable system and complied with the required
standards.
6.4. Radiated EMI and EMC:
No peak emission in the frequency range from 30 MHz to 1 GHz and it shall not exceed Class B
limit when measured per ANSI C63.4, CISPR 22 and VCCI measurement procedures. Each
conducted and radiated emissions shall be measured in the applicable system.
6.5. Dielectric with stand Hi Pot Test:
6.5.1. Primary to Secondary:
3000 Vac or 4242 Vdc Hi-Pot Test from primary to secondary for a minimum of one
second, trip current <10mA.
6.5.2. Primary to FG:
1500 Vac Hi-Pot Test from primary to FG for a minimum of one second.
6.6. Insulation resistance:
6.6.1. Aafter 500Vdc is applied which between primary to secondary or secondary to FG for one
minute the Impedance shall be >20M ohm.
6.6.2. Leakage Current: 0.5mA Max. @264Vac / 60Hz
7. RELIABILITIES
7.1. M.T.B.F.:
The mean time between failures of PSU shall equal or exceed 60000 hours when operated at
75% continuous load in an ambient temperature of 25 ℃ as calculated by parts stress method of
MODEL NO. PSM250-405
REVISION
01
DATE
2005.03.14
REV: 01
PAGE.
11
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